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3M™ E-A-Rfit™ Dual-Ear Enclosure Assembly Speaker

Works in conjunction with the 3M™ E-A-Rfit™ Dual-ear Validation System to help employers determine whether workers are receiving adequate hearing protection from their hearing protector.

Supplier:  3M™ 7100077866

Catalog No. 19-122-401

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  • For use with E-A-Rfit™ dual-ear validation system
  • Connects to an AC power source
  • Compact and easy to set up
  • Presents a test signal across seven test frequencies (125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz, 8000 Hz) in under five seconds
  • USB Cable connects speaker to computer (not included)
  • Dual-element microphone (Catalog No. 19-122-402) plugs into back of speaker (not included)


3M™ products must be used in accordance with OSHA regulations, and the user instructions, warnings, and limitations accompanying each product.



E-A-Rfit™ Dual-Ear Validation System
E-A-Rfit™ Dual-Ear Enclosure Assembly Speaker


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